<template>
  <el-dialog width="500px" title="导入员工列表" :visible="showImportDialog" @close="hClose">
    <el-row type="flex" justify="center">
      <div class="upload-excel">
        <input
          ref="excel-upload-input"
          class="excel-upload-input"
          type="file"
          accept=".xlsx, .xls"
          @change="hChange"
        >
        <!-- @dragenter="handleDragEnter"
          @dragleave="handleDragLeave" -->
        <div
          v-if="!selectedFile"
          class="drop"
          draggable="true"
          @dragover.prevent
          @drop.prevent="handleDrop"
        >
          <i class="el-icon-upload" />
          <el-button type="text" @click="hDownload">下载导入模板</el-button>
          <span>将文件拖到此处或
            <el-button type="text" @click="hUpload">点击上传</el-button>
          </span>
        </div>
        <p v-else>{{ selectedFile.name }}</p>
      </div>
    </el-row>
    <el-row type="flex" justify="end">
      <!-- update:props属性名，值 直接修改 .sync修饰符的属性值 -->
      <el-button size="mini" type="primary" @click="hClose">取消</el-button>
    </el-row>
  </el-dialog>
</template>

<script>
import { exportTemplate, uploadExcel } from '@/api/employee'
import FileSaver from 'file-saver'
export default {
  props: {
    showImportDialog: {
      type: Boolean,
      required: true
    }
  },
  data() {
    return {
      selectedFile: null
    }
  },
  methods: {
    async hChange(e) {
      const file = e.target.files[0]
      if (file) {
        this.selectedFile = file
        this.uploadFile()
      }
    },
    hUpload() {
      this.$refs['excel-upload-input'].click()
    },
    hClose() {
      this.$emit('update:show-import-dialog', false)
    },
    async hDownload() {
      const res = await exportTemplate()
      FileSaver.saveAs(res, '员工导入模板.xlsx')
    },
    // handleDragEnter() {
    //   this.isDragging = true
    // },
    // handleDragLeave() {
    //   this.isDragging = false
    // },
    handleDrop(event) {
      console.log(event)
      this.selectedFile = event.dataTransfer.files[0]
      this.uploadFile()
    },
    async uploadFile() {
      const formData = new FormData()
      formData.append('file', this.selectedFile)
      // 发送上传请求，具体实现根据后端接口而定
      try {
        await uploadExcel(formData)
        this.$message.success('添加成功')
        this.hClose()
        this.$emit('load')
      } finally {
        this.$refs['excel-upload-input'].value = ''
        this.selectedFile = ''
      }
    }
  }
}
</script>

<style scoped lang="scss">
    .upload-excel {
      display: flex;
      justify-content: center;
      margin: 20px;
      width: 360px;
      height: 180px;
      align-items: center;
      color: #697086;
      .excel-upload-input {
        display: none;
        z-index: -9999;
      }
      .btn-upload,
      .drop {
        border: 1px dashed #dcdfe6;
        width: 100%;
        height: 100%;
        text-align: center;
        line-height: 160px;
        border-radius: 8px;
        display: flex;
        flex-direction: column;
        justify-content: center;
      }
      .drop {
        line-height: 40px;
        color: #bbb;
        i {
          font-size: 60px;
          display: block;
          color: #c0c4cc;
        }
      }
    }
</style>
